108 BEREDITY AND SEX 



i,, color the male more highly colored than the 

 female. In another native species, Maevia vittata, 

 there arc two kinds of males, both colored differently 

 from the female. 



Passing over the groups of fishes and reptiles in 

 which some striking cases of differences between the 

 3exes occur, we come to the birds, where we find the 

 besl examples of secondary sexual characters. 



Fig. 56. — Super!) bird of paradise. 

 (After Elliot.) 



In the white-booted humming bird (Fig. 14) two 

 of the tail feathers of the male are drawn out, their 

 shafts denuded of the vanes except at the tip where 

 the feather ends in a broad expansion. 



In the great bird of paradise, of the Aru Islands (Fig. 

 13), the male has wonderful plumes arising from the 

 aides that can be erected to produce a gorgeous display. 



